article: South Korean stars shined brightly at the Opening Ceremony of the 17th Asian Games held here on Friday, Sept. 19 in Inchen .
  Many stars gave shows during the welcoming performance.The most famous K-pop boy group, EXO, performed two songs on stage.Famous actors followed to show up on stage, including Jang Dong-gun, Hyun Bin, and Kim Soo-hyun.Lee Young-ae, the South Korean actress known for volunteering, was the last torchbearer  and lighted the cauldron  with two children.
  After the lighting of the flame, 16 more minutes of other K-pop performances were held. JYJ sang the theme song 'Only One' and Psy and Chinese pianist Lang Lang finally performed "Gangnam Style" with the 60,000-strong audience.
question: _   performed "Gangnam Style" with Psy.
options: EXO JYJ Lang Lang Li Yundi